Knix
Teen Leakproof Cotton Bikini
$22
Buy at KnixIf you buy through this link the brand may pay us a commission, at no cost to you. It never changes our numbers. Disclosure
What “Moderate” means here
Knix's Moderate tier holds 18–36 mL Data quality grade C, conflicting / unconfirmed claim by the brand's own published claim (2-4 super tampons (collection page, re-confirmed 2026-06-11; blog says 2-3)).
Sizesstock checked 2026-06-11
- XXS
- XS
- S
- M
- L
- XL
- XXL
Not sure which size? One hip measurement answers it for every brand.
Over two years
This pair
$22
once - built to last about two years with normal care (the brand's own guidance).
Disposables
$120 to $288
over the same two years, at $5 to $12 a month - a commonly cited range.
A reusable pair only replaces disposables on the days you actually wear it, so your real saving depends on how often you reach for it. The more you do, the further a one-time $22 goes against a monthly cost. These are illustrative figures you can adjust, not a measured PeriodFinder number.
This absorbency in other brands' language
Knix Moderate holds about 18–36 mL. To get the same real coverage elsewhere, you'd need:
- ThinxAll Day(100 mL)Data quality grade A, brand publishes mL
- ModibodiModerate(30 mL)Data quality grade A, brand publishes mL
- SaaltSuper(40–50 mL)Data quality grade B, converted from tampon counts
- Proof (Proof by Always)Overnight (Super Heavy Brief)(35 mL)Data quality grade B, converted from tampon counts
- Ruby LovePeriod underwear (one level)(12.5 mL)Data quality grade B, converted from tampon counts
- The Period CompanyHeavy(45 mL)Data quality grade B, converted from tampon counts
- BambodyHigh Absorbency(10 mL)Data quality grade C, conflicting / unconfirmed claim
- AisleBOOST (adjustable, +BOOSTER insert)(20–40 mL)Data quality grade B, converted from tampon counts
- WUKASuper Heavy(60 mL)Data quality grade A, brand publishes mL
- RaelReusable Boyshort(15–25 mL)Data quality grade C, conflicting / unconfirmed claim
- Hanky PankyRegular(15 mL)Data quality grade B, converted from tampon counts
- SkimsPeriod Panties Brief(15 mL)Data quality grade B, converted from tampon counts
Tier-for-tier equivalence by midpoint capacity. Full table · Methodology
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